<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>zt</title>
</head>
<body>
<div id="app"></div>
</body>
</html>
<style>
    body,html{
        margin: 0;
        height: 100%;
        padding: 0;
        position: relative;
        font-family: "Source Han Sans CN","Helvetica Neue",Helvetica,Arial,Verdana,sans-serif;
    }
</style>